Your tools change.
Your context comes along.

Start with the AI tools you use every day. Connect your notes and other sources when you’re ready.

A person at a table with a laptop, phone and notebook, glancing up with a warm smile.

Every tool, feeding one table

Claude

Use saved decisions and preferences in Claude conversations.

Connection URL + client instructionsConnect Claude

ChatGPT

Bring your shared memory into ChatGPT through its MCP connection.

Requires a plan or workspace with custom MCP supportConnect ChatGPT

Codex

Keep project decisions available while you work in your coding agent.

MCP connection + global instructionsConnect Codex

Cursor

Bring the context behind your code into the editor.

Guided app setup or manual MCP connectionConnect Cursor

Devin Desktop (formerly Windsurf)

Bring saved decisions and preferences into your agent sessions.

Paste the MCP URL, approve in the browser; bearer header as fallbackConnect Devin Desktop

Claude Code

Recall earlier decisions and save useful progress from the terminal.

Guided app setup or connection scriptConnect Claude Code

Other MCP clients

Connect compatible clients to the same brain using its MCP endpoint.

Client support and setup varyRead the client guide

Obsidian

Send notes from your vault into the memory your AI tools can recall.

Community pluginConnect Obsidian

Notion

Make selected workspace content available to your connected AI tools.

Configure an internal integrationConnect Notion

Email

Bring configured inbox content into your brain as another source of context.

Read-only integration; credentials requiredExplore email capture

Calendar

Give your brain context from published calendar feeds.

Read-only ICS feedExplore calendar capture

Browser extension

Save something useful while you browse, without switching to another app.

Browser extensionSet up browser capture

iOS Shortcuts

Capture a thought from your phone using text, voice, or the share sheet.

Configure your brain’s connection detailsSet up mobile capture

Command line

Capture and recall from scripts and your terminal.

Install and configure the Second Brain CLIRead the CLI and API guide

REST API

Build your own capture flows and connect the tools you make.

Authenticated APIRead the API reference

One brain, several ways in. AI clients read and write through MCP. Capture integrations bring selected content into the same store. Client availability, plans, and permissions can change; each guide has the connection details.

Start with the desktop app.

It creates your brain and walks you through connecting your tools.

Know where it all lives.

Your account, your memories, and controls you can inspect.

Take your context into
your next conversation.

Free, open source, and in your own Cloudflare account.

Get Second Brain